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U.S. spot Bitcoin ETFs recorded a total net outflow of $146 million on May 8, while U.S. spot Ethereum ETFs saw a total net inflow of $3.57 million, according to SoSoValue data.
Why it matters
The two flows moved in opposite directions on the same trading day, a pattern that recurs when the appetite for one product is driven by different buyers than the other. The $3.57 million ETH figure is small in absolute terms but positive — net buying rather than selling — and lands on a day the larger BTC product lost a nine-figure sum.
Market impact
The BTC outflow is the heavier beat: nine-figure redemptions on a single day usually signal institutional rebalancing, not retail churn. The ETH side is the more directional read, since a positive day inside an otherwise thin-flow product is a more reliable demand signal than the same number would be inside a deep-pool product. Watch the next two sessions for confirmation that the BTC outflow is a one-day reset rather than the start of a streak.
Source: [SoSoValue: Advanced AI-Powered Crypto Investment Research Platform](https://sosovalue.com/assets/etf/Total_Crypto_Spot_ETF_Fund_Flow?page=usBTC)
Frequently asked questions
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How much did U.S. spot Bitcoin ETFs lose on May 8?
U.S. spot Bitcoin ETFs recorded a total net outflow of $146 million on May 8, according to SoSoValue data.
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What happened with spot Ethereum ETFs the same day?
U.S. spot Ethereum ETFs saw a total net inflow of $3.57 million on May 8, moving in the opposite direction of the BTC product.
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Why do the two ETF flows matter when read together?
The BTC and ETH products saw flows diverge on the same session, suggesting different buyer bases and different demand cadence between the two products.
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Is a $146M single-day BTC ETF outflow significant?
Nine-figure redemptions on a single day are typically read as institutional rebalancing rather than retail churn, though one-day figures are not enough to confirm a trend.
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How should the $3.57M ETH ETF inflow be interpreted?
The number is small in absolute terms, but a positive day inside a thinner-flow product is a more reliable demand signal than the same figure would be in a deep-pool product like IBIT.
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